F.L. Sayles Frank T. Manheim L.S. Waterman 1973 <p>Legs 16, 17, and 18 encountered three groups of sediment types: rapidly deposited biogenic deposits, showing marked changes in interstitial calcium, magnesium, and strontium; slowly deposited biogenic deposits, showing little variability in pore fluids other than elevated silica concentrations; and terrigenous deposits. The latter showed the usual loss of sulfate and combination of diagenetic reactions culminating in loss of Na⁺ , K⁺ , Mg⁺⁺, with variable changes in Ca⁺⁺. Very high barium concentrations (to 59 mg/kg) occurred at Site 178 (Leg 18).</p> application/pdf 10.2973/dsdp.proc.18.app2.1973 en National Science Foundation Interstitial water studies on small core samples, legs 16, 17, and 18 article